If you have a good look at the seat you will notice it split in 2 parts 60/40. I'm wondering is only right (smaller) part adjustable or entire seat ? I read somewhere that having just seat may not be enough - you may need some stuff that located on the rigth door (???) because seats suppose to return to unadjusted position when you open car's door - to let you out.
don't know for sure - never seen it myself.